Trillium georgianum
S.B.Farmer
Graphe en cours d’indexation
Calcul du tissu écologique de Trillium georgianum.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
CR · En danger critiquecritères B1ab(iii,v)+2ab(iii,v)→Stable- Évaluation
- 2020 · v3.1
- Altitude
- 200 – 225 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The total population of the species is thought to be around 2,000 individuals all of which occur in a single location threatened by construction for industrial development. Construction within the species’ habitat since its discovery in 1996 has resulted in destruction of some occurrences. Though some plants were rescued prior to construction, additional development is possible within the region and could result in population declines (Schilling et al. 2017).
Menaces identifiées(5 menaces classées CMP-IUCN)
1_2Commercial & industrial areasRapid DeclinesWhole (>90%)Ongoing7_2_4Abstraction of surface water (unknown use)UnknownUnknownUnknown9_1_2Run-offUnknownUnknownUnknown1_1Housing & urban areasSlow, Significant DeclinesWhole (>90%)Ongoing9_2_3Type Unknown/UnrecordedUnknownFuture
Description complète des menacesTexte détaillé évaluation IUCNExpert
Between the first observation of the species’ only known occurrence in 1995 and subsequent visits to the site, substantial portions of the species’ habitat were ditched, clearcut, levelled, and filled. Habitat degradation continues in portions of the species’ range as a result of development of the area (Schilling et al. 2017). Recent expansion of existing trucking yards adjacent to the species' known range may have caused loss of habitat and could lead to hydrology changes and increased runoff.
Habitats préférentiels (classification IUCN)
1_4Forest - Temperate
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Portions of the species’ range were thought to occur on land owned by the Tennessee Valley Authority and Dalton Utilities and cooperation agreements protecting the species’ range could potentially be arranged with these entities (Schilling et al. 2017). However, this status was recently found to be in error. At present, all occurrences are thought to be on privately held land. Surveys of the watershed containing the entire population of the species have been conducted, but additional research is necessary to determine if subpopulations exist outside this area. More information is also needed about the species’ life history, and ecology. No ex situ seed germplasm collections are known at this time (Center for Plant Conservation 2019). However, the species is known to be in cultivation and is easily propagated vegetatively and by seed.
Actions de conservation (4)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection2_1Site/area management2_3Habitat & natural process restoration
Stress écologiques (16)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticulturenational
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_3Life history & ecology1_5Threats3_1Population trends3_4Habitat trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Systèmes (terrestre/eau douce/marin)
Formes de croissance
Références bibliographiques (4)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-2. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 13 June 2020).
- Center for Plant Conservation. 2019. CPC National Collection. Available at: <a href="https://saveplants.org/national-collection/">https://saveplants.org/national-collection/</a>. (Accessed: 6 August 2019).
- Schilling, E. E., Floden, A., Lampley, J., Patrick, T. S. and Farmer, S. B. 2017. A New Species in Trillium subgen. Delostylium (Melanthiaceae, Parideae). <i>Phytotaxa</i> 296(3): 287-291.
- Ohara, M. 1989. Life history evolution in the genus Trillium. <i>Plant Species Biology</i> 4(1): 1-28.
Évaluateurs & contributeurs (5)Personnes ayant contribué à l'évaluation IUCNExpert
Meredith, C.R. & Trillium Working Group 2019 2020. Trillium georgianum. The IUCN Red List of Threatened Species 2020: e.T146085278A146089240. Accessed on 05 May 2026.
Distribution mondiale
Phénologie
Consulter sur les bases externes
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (1)— redirigent vers cette page
- Trillium pusillum var. georgianumMichaux.
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).